Aqueous lithium-ion battery
a lithium-ion battery and lithium-ion battery technology, applied in the field of electrochemical industry, can solve the problems of limiting the use of large-scale energy storage systems, affecting the reliability of battery operation, and reducing battery capacity, etc., and achieves the effects of low cost, reliable operation and high capacity
Active Publication Date: 2019-07-09
CHASTNOE UCHREZHDENIE NAZARBAYEV UNIV RES & INNOVATION SYST
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
This configuration improves battery performance, extends service life, and ensures environmental safety by maintaining a stable electrolyte pH, reducing the need for specialized materials and sealing, thus lowering production costs while enhancing energy storage capabilities.
Problems solved by technology
1. Low specific energy capacity, i.e. a prolonged work on one charge is not provided, a frequent recharge is required, which limits their use in large-scale systems of energy storage, for example, from renewable sources;
2. Low cyclability, i.e. they lose very rapidly energy capacity and power upon the repeated charge / discharge processes (upon use); the battery is short-life, the service life is limited within several hundreds of charge / discharge cycles; furthermore, upon each cycle the battery capacity decreases considerably, which is due to the use of severe alkaline electrolyte leading to the degradation of intercalation electrodes (both anode and cathode). This is a main reason of low cyclability of the battery in this invention;
3. Presence of severe alkaline electrolyte (chemically aggressive, caustic) is dangerous for users and equipment in presence of leakage; it is required a resistant battery box from special severe alkaline-proof materials and careful isolation and sealing of battery elements during their production to prevent a leakage of the electrolyte, which leads to a considerable cost increase of the production.
1. Low specific energy capacity, i.e. a prolonged work on one charge is not provided, a frequent recharge is required, which limits their use in large-scale storage systems, for example, of energy from renewable sources;
2. Low cyclability, i.e. they lose very rapidly energy capacity and power upon the repeated charge / discharge processes (upon use); the battery is short-life, the service life is limited within several hundreds of charge / discharge cycles; furthermore, upon each cycle the battery capacity decreases considerably, which is due to the use of severe alkaline electrolyte leading to the degradation of intercalation electrodes (both anode and cathode). This is a main reason of low cyclability of the battery in this invention;
3. Presence of severe alkaline electrolyte (chemically aggressive, caustic) is dangerous for users and equipment in presence of leakage; it is required a resistant battery box from special severe alkaline-proof materials and careful isolation and sealing of battery elements during their production to prevent a leakage of the electrolyte, which leads to a considerable cost increase of the production.
Method used
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Embodiment Construction
[0021]One embodiment of the invention includes:[0022]a cathode 1 comprising mixed salt of intercalating cations (alkaline and / or alkaline earth metals) with other metals and represent oxides, phosphates, silicates, sulfates, for example: LiCoPO4, LiMnPO4, LiFePO4, LiMn2O4, LiCoO2, LiMn1 / 3Ni1 / 3O4 and / or their mixtures;[0023]an anode 2 consisting in zinc, aluminum or another metal from a range of transition metals or an inert anode from stainless steel or carbon.[0024]a separator 3 from a porous material (cotton, cellulose or commercial separators for batteries with electrolytes on aqueous base like Absorbed Glass Mat (AGM), nonwoven separators or other separators from natural or synthetic materials); and[0025]a box 4 from polypropylene or other electrically nonconducting synthetic and polymer materials.
[0026]Assemblage and operation of the invention are carried out as follows.
[0027]The finished cathode 1 and anode 2, sunk into the separator 3, are placed in the box 4 of a cell of an ...
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Abstract
A lithium-ion battery includes a cell placed into an electrically non-conducting box filled with an electrolyte. The cell includes an intercalation cathode and an electroconductive anode separated from each other by a porous separator. The cell is submerged into the electrolyte. The electrolyte includes an aqueous solution of metals salts. The aqueous solution includes metals ions of the metals salts. A pH value of the aqueous solution being adapted to prevent a hydrolysis of the metal ions in the electrolyte.
Description
BACKGROUND[0001]The present invention relates to the electrochemical industry, in particular, to aqueous lithium-ion batteries.[0002]There is a known invention comprising a box, an anode, a cathode, an electrolyte (US Patent, WO 20111044644, 2011).[0003]However, this invention has the following drawbacks:[0004]1. Low specific energy capacity, i.e. a prolonged work on one charge is not provided, a frequent recharge is required, which limits their use in large-scale systems of energy storage, for example, from renewable sources;[0005]2. Low cyclability, i.e. they lose very rapidly energy capacity and power upon the repeated charge / discharge processes (upon use); the battery is short-life, the service life is limited within several hundreds of charge / discharge cycles; furthermore, upon each cycle the battery capacity decreases considerably, which is due to the use of severe alkaline electrolyte leading to the degradation of intercalation electrodes (both anode and cathode). This is a m...
Claims
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IPC IPC(8): H01M4/38H01M4/58H01M4/485H01M12/08H01M10/36
CPCH01M10/36H01M4/381H01M4/485H01M12/08H01M4/5825Y02E60/128H01M2300/002H01M2300/0005Y02E60/10
InventorBAKENOV, ZHUMABAY
OwnerCHASTNOE UCHREZHDENIE NAZARBAYEV UNIV RES & INNOVATION SYST